Yeah I play casual wow on my TV via steam link and the steam controller. It works well for just some casual questing thought.

As for the bad habit, yeah wow can get quite hardcore and I see how it can consume most of your time. I respect your decision, but it can also be a great casual game if you take it lightly. I just came back a month ago and I've been having a blast. I've never been a raider or anything, I enjoy map exploration, questing and dungeon so keeping up with the season gear isn't really important for me, but o played hardcore PvP during Wrath about 10 years ago and I remember the struggle. I had the latest arena sets and etc. It was fun but I am not sure I would do it again, especially that now I have a full time job and I'm a father, I don't even have the free time to put into it :p

Anything too much can be bad.